Head support



FIG. 1 is a perspective view of a head support showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are included for the purpose of illustrating unclaimed portions of the head support and form no part of the claimed design. 

CLAIM The ornamental design for a head support, as shown and described. 